No heat when engine is running

2007 DODGE RAM
162,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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CCORCHADO
  • MEMBER
  • 1 POST
it will not give heat especially when is running. already replaced water pump , flush heater coil and replaced thermostat
Jan 15, 2018 at 6:48 AM
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STEVE W.
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 15,146 POSTS
This sounds like you have low engine coolant or the temperature blend door actuator stopped working but to but sure this video and guide can help us fix it.

https://youtu.be/SNRb6pSwYuU

and if the temperature blend door needs replacement here is a guide that can help with diagrams below to show you on your car.

https://www.2carpros.com/articles/replace-blend-door-motor

This guide can help as well

https://www.2carpros.com/articles/car-heater-not-working

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.
Apr 23, 2021 at 10:53 AM
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